Java Code Examples for org.eclipse.swt.graphics.Font#dispose()

protected int getTextExtend(Font font, String string) {
	if (string.isEmpty())
		return 0;
	if (zoom != 1.0) {
		FontData data = font.getFontData()[0];
		FontDescriptor newFontDescriptor = FontDescriptor.createFrom(font)
				.setHeight((int) (data.getHeight() * zoom));
		font = newFontDescriptor.createFont(Display.getDefault());
	}
	if (gc.getFont() != font)
		gc.setFont(font);
	int offset = gc.textExtent(string).x;
	if (zoom != 1.0) {
		font.dispose();
	}
	return (int) Math.ceil((offset / zoom));
}
 

private void drawChartOntoGC(GC gc) {
	Rectangle bounds = super.getBounds();
	gc.setBackground(mColorManager.getCalendarBackgroundColor());
	gc.fillRectangle(bounds);

	Font used = null;
	if (CalendarCombo.OS_CARBON) {
		used = mSettings.getCarbonDrawFont();
		if (used != null)
			gc.setFont(used);
	}

	// header
	drawHeader(gc);
	// day titles
	drawTitleDays(gc);
	// days
	drawDays(gc);
	// 1 pixel border
	drawBorder(gc);

	gc.dispose();
	if (used != null)
		used.dispose();
}
 

public static void setGCFont( GC gc, Device device, FontData fontData ) {
  if ( Const.getOS().startsWith( "Windows" ) ) {
    Font font = new Font( device, fontData );
    gc.setFont( font );
    font.dispose();
  } else {
    gc.setFont( device.getSystemFont() );
  }
}
 

@Override
public void deactivate() {
	IFigure figure = getFigure();
	if (figure instanceof ProductSystemFigure) {
		ProductSystemFigure pFigure = (ProductSystemFigure) figure;
		Font infoFont = pFigure.infoFont;
		if (infoFont != null && !infoFont.isDisposed())
			infoFont.dispose();
	}
	super.deactivate();
}
 

public static void setGCFont( GC gc, Device device, FontData fontData ) {
  if ( Const.getOS().startsWith( "Windows" ) ) {
    Font font = new Font( device, fontData );
    gc.setFont( font );
    font.dispose();
  } else {
    gc.setFont( device.getSystemFont() );
  }
}
 

@Override
public void dispose ()
{
    for ( final Font font : this.fontCache.values () )
    {
        font.dispose ();
    }
    this.fontCache.clear ();

    super.dispose ();
}
 

/**
 * Create an awt font by converting as much information
 * as possible from the provided swt <code>FontData</code>.
 * <p>Generally speaking, given a font size, an swt font will
 * display differently on the screen than the corresponding awt
 * one. Because the SWT toolkit use native graphical ressources whenever
 * it is possible, this fact is platform dependent. To address
 * this issue, it is possible to enforce the method to return
 * an awt font with the same height as the swt one.
 *
 * @param device The swt device being drawn on (display or gc device).
 * @param fontData The swt font to convert.
 * @param ensureSameSize A boolean used to enforce the same size
 * (in pixels) between the swt font and the newly created awt font.
 * @return An awt font converted from the provided swt font.
 */
public static java.awt.Font toAwtFont(Device device, FontData fontData,
        boolean ensureSameSize) {
    int height = (int) Math.round(fontData.getHeight() * device.getDPI().y
            / 72.0);
    // hack to ensure the newly created awt fonts will be rendered with the
    // same height as the swt one
    if (ensureSameSize) {
        GC tmpGC = new GC(device);
        Font tmpFont = new Font(device, fontData);
        tmpGC.setFont(tmpFont);
        JPanel DUMMY_PANEL = new JPanel();
        java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(),
                fontData.getStyle(), height);
        if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                > tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                    > tmpGC.textExtent(Az).x) {
                height--;
                tmpAwtFont = new java.awt.Font(fontData.getName(),
                        fontData.getStyle(), height);
            }
        }
        else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                < tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                    < tmpGC.textExtent(Az).x) {
                height++;
                tmpAwtFont = new java.awt.Font(fontData.getName(),
                        fontData.getStyle(), height);
            }
        }
        tmpFont.dispose();
        tmpGC.dispose();
    }
    return new java.awt.Font(fontData.getName(), fontData.getStyle(),
            height);
}
 

@Test( expected = IllegalArgumentException.class )
public void testSetFont_DisposedFont() {
  GridItem item = new GridItem( grid, SWT.NONE );
  Font font = new Font( display, "Arial", 20, SWT.BOLD );
  font.dispose();
  item.setFont( font );
}
 

@Test( expected = IllegalArgumentException.class )
public void testSetFontByIndex_DisposedFont() {
  createGridColumns( grid, 3, SWT.NONE );
  GridItem item = new GridItem( grid, SWT.NONE );
  Font font = new Font( display, "Arial", 20, SWT.BOLD );
  font.dispose();
  item.setFont( 1, font );
}
 

/**
 * Create an awt font by converting as much information
 * as possible from the provided swt <code>FontData</code>.
 * <p>Generally speaking, given a font size, an swt font will
 * display differently on the screen than the corresponding awt
 * one. Because the SWT toolkit use native graphical ressources whenever
 * it is possible, this fact is platform dependent. To address
 * this issue, it is possible to enforce the method to return
 * an awt font with the same height as the swt one.
 *
 * @param device The swt device being drawn on (display or gc device).
 * @param fontData The swt font to convert.
 * @param ensureSameSize A boolean used to enforce the same size
 * (in pixels) between the swt font and the newly created awt font.
 * @return An awt font converted from the provided swt font.
 */
public static java.awt.Font toAwtFont(Device device, FontData fontData,
        boolean ensureSameSize) {
    int height = (int) Math.round(fontData.getHeight() * device.getDPI().y
            / 72.0);
    // hack to ensure the newly created awt fonts will be rendered with the
    // same height as the swt one
    if (ensureSameSize) {
        GC tmpGC = new GC(device);
        Font tmpFont = new Font(device, fontData);
        tmpGC.setFont(tmpFont);
        JPanel DUMMY_PANEL = new JPanel();
        java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(),
                fontData.getStyle(), height);
        if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                > tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                    > tmpGC.textExtent(Az).x) {
                height--;
                tmpAwtFont = new java.awt.Font(fontData.getName(),
                        fontData.getStyle(), height);
            }
        }
        else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                < tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                    < tmpGC.textExtent(Az).x) {
                height++;
                tmpAwtFont = new java.awt.Font(fontData.getName(),
                        fontData.getStyle(), height);
            }
        }
        tmpFont.dispose();
        tmpGC.dispose();
    }
    return new java.awt.Font(fontData.getName(), fontData.getStyle(),
            height);
}
 

public void dispose() {
  gc.dispose();
  if ( transform != null && transform.isDisposed() == false ) {
    transform.dispose();
  }
  for ( Color color : colors ) {
    color.dispose();
  }
  for ( Font font : fonts ) {
    font.dispose();
  }
}
 

/**
 * Create an awt font by converting as much information
 * as possible from the provided swt <code>FontData</code>.
 * <p>Generally speaking, given a font size, an swt font will
 * display differently on the screen than the corresponding awt
 * one. Because the SWT toolkit use native graphical ressources whenever
 * it is possible, this fact is platform dependent. To address
 * this issue, it is possible to enforce the method to return
 * an awt font with the same height as the swt one.
 *
 * @param device The swt device being drawn on (display or gc device).
 * @param fontData The swt font to convert.
 * @param ensureSameSize A boolean used to enforce the same size
 * (in pixels) between the swt font and the newly created awt font.
 * @return An awt font converted from the provided swt font.
 */
public static java.awt.Font toAwtFont(Device device, FontData fontData,
        boolean ensureSameSize) {
    int height = (int) Math.round(fontData.getHeight() * device.getDPI().y
            / 72.0);
    // hack to ensure the newly created awt fonts will be rendered with the
    // same height as the swt one
    if (ensureSameSize) {
        GC tmpGC = new GC(device);
        Font tmpFont = new Font(device, fontData);
        tmpGC.setFont(tmpFont);
        JPanel DUMMY_PANEL = new JPanel();
        java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(),
                fontData.getStyle(), height);
        if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                > tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                    > tmpGC.textExtent(Az).x) {
                height--;
                tmpAwtFont = new java.awt.Font(fontData.getName(),
                        fontData.getStyle(), height);
            }
        }
        else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                < tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az)
                    < tmpGC.textExtent(Az).x) {
                height++;
                tmpAwtFont = new java.awt.Font(fontData.getName(),
                        fontData.getStyle(), height);
            }
        }
        tmpFont.dispose();
        tmpGC.dispose();
    }
    return new java.awt.Font(fontData.getName(), fontData.getStyle(),
            height);
}
 

/**
 * Show the exception message that prevented to draw the chart
 * 
 * @param g2d
 * @param ex
 *            The exception that occured
 */
private final void showException( GC g2d, Exception ex )
{
	Point pTLC = new Point( 0, 0 );

	// String sWrappedException = ex.getClass( ).getName( );
	Throwable th = ex;

	String sMessage = null;
	if ( th instanceof BirtException )
	{
		sMessage = ( (BirtException) th ).getLocalizedMessage( );
	}
	else
	{
		sMessage = ex.getMessage( );
	}

	if ( sMessage == null )
	{
		sMessage = "<null>"; //$NON-NLS-1$
	}
	// StackTraceElement[] stea = ex.getStackTrace( );
	Dimension d = getSize( );

	Device dv = Display.getCurrent( );
	Font fo = new Font( dv, "Courier", SWT.BOLD, 12 ); //$NON-NLS-1$
	g2d.setFont( fo );
	FontMetrics fm = g2d.getFontMetrics( );
	g2d.setBackground( dv.getSystemColor( SWT.COLOR_WHITE ) );
	g2d.fillRectangle( pTLC.x + 20,
			pTLC.y + 20,
			d.width - 40,
			d.height - 40 );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	g2d.drawRectangle( pTLC.x + 20,
			pTLC.y + 20,
			d.width - 40,
			d.height - 40 );
	Region rgPrev = new Region( );
	g2d.getClipping( rgPrev );
	g2d.setClipping( pTLC.x + 20, pTLC.y + 20, d.width - 40, d.height - 40 );
	int x = pTLC.x + 25, y = pTLC.y + 20 + fm.getHeight( );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	g2d.drawString( ERROR_MSG, x, y );
	y += fm.getHeight( );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
	g2d.drawText( sMessage, x, y );

	g2d.setClipping( rgPrev );
	rgPrev.dispose( );
	fo.dispose( );
}
 

public void print(){
   if (printer.startJob("Text")) { // the string is the job name - shows up

      try {// in the printer's job list
         Rectangle clientArea = printer.getClientArea();
         Rectangle trim = printer.computeTrim(0, 0, 0, 0);
         Point dpi = printer.getDPI();
         leftMargin = dpi.x + trim.x; // one inch from left side of paper
         rightMargin = clientArea.width - dpi.x + trim.x + trim.width; // one
         // inch
         // from
         // right
         // side
         // of
         // paper
         topMargin = dpi.y + trim.y; // one inch from top edge of paper
         bottomMargin = clientArea.height - dpi.y + trim.y + trim.height; // one
         // inch
         // from
         // bottom
         // edge
         // of
         // paper

         /* Create a buffer for computing tab width. */
         int tabSize = 4; // is tab width a user setting in your UI?
         StringBuilder tabBuffer = new StringBuilder(tabSize);
         for (int i = 0; i < tabSize; i++)
            tabBuffer.append(' ');
         tabs = tabBuffer.toString();

         /*
          * Create printer GC, and create and set the printer font &
          * foreground color.
          */
         gc = new GC(printer);

         font = printer.getSystemFont(); // ResourceUtils.getFont(Styles.getInstance().FONT_COURIER);
         // foregroundColor = ResourceUtils.getColor(Styles.DARK_RGB_TEXT);
         // backgroundColor =
         // ResourceUtils.getColor(Styles.BACKGROUND_ENABLED);

         FontData fontData = font.getFontData()[0];
         printerFont = new Font(printer, fontData.getName(), fontData.getHeight(), fontData.getStyle());
         gc.setFont(printerFont);
         tabWidth = gc.stringExtent(tabs).x;
         lineHeight = gc.getFontMetrics().getHeight();

         // RGB rgb = foregroundColor.getRGB();
         // printerForegroundColor = new Color(printer, rgb);
         // gc.setForeground(printerForegroundColor);

         // rgb = backgroundColor.getRGB();
         // printerBackgroundColor = new Color(printer, rgb);
         // gc.setBackground(printerBackgroundColor);

         /* Print text to current gc using word wrap */
         printText(printer);
         printer.endJob();

      } catch (Exception e) {
         throw new RuntimeException(e);

      } finally {
         /* Cleanup graphics resources used in printing */
         if (printerFont != null)
            printerFont.dispose();
         // if(printerForegroundColor != null)
         // printerForegroundColor.dispose();
         // if(printerBackgroundColor != null)
         // printerBackgroundColor.dispose();
         if (gc != null)
            gc.dispose();
      }
   }
}
 

private final void showException( GC g2d, Exception ex )
{
	String sWrappedException = ex.getClass( ).getName( );
	Throwable th = ex;
	while ( ex.getCause( ) != null )
	{
		ex = (Exception) ex.getCause( );
	}
	String sException = ex.getClass( ).getName( );
	if ( sWrappedException.equals( sException ) )
	{
		sWrappedException = null;
	}

	String sMessage = null;
	if ( th instanceof BirtException )
	{
		sMessage = ( (BirtException) th ).getLocalizedMessage( );
	}
	else
	{
		sMessage = ex.getMessage( );
	}

	if ( sMessage == null )
	{
		sMessage = "<null>";//$NON-NLS-1$
	}
	StackTraceElement[] stea = ex.getStackTrace( );
	Point d = this.getSize( );

	Device dv = Display.getCurrent( );
	Font fo = new Font( dv, "Courier", SWT.BOLD, 16 );//$NON-NLS-1$
	g2d.setFont( fo );
	FontMetrics fm = g2d.getFontMetrics( );
	g2d.setBackground( dv.getSystemColor( SWT.COLOR_WHITE ) );
	g2d.fillRectangle( 20, 20, d.x - 40, d.y - 40 );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	g2d.drawRectangle( 20, 20, d.x - 40, d.y - 40 );
	g2d.setClipping( 20, 20, d.x - 40, d.y - 40 );
	int x = 25, y = 20 + fm.getHeight( );
	g2d.drawString( "Exception:", x, y );//$NON-NLS-1$
	x += g2d.textExtent( "Exception:" ).x + 5;//$NON-NLS-1$
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
	g2d.drawString( sException, x, y );
	x = 25;
	y += fm.getHeight( );
	if ( sWrappedException != null )
	{
		g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
		g2d.drawString( "Wrapped In:", x, y );//$NON-NLS-1$
		x += g2d.textExtent( "Wrapped In:" ).x + 5;//$NON-NLS-1$
		g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
		g2d.drawString( sWrappedException, x, y );
		x = 25;
		y += fm.getHeight( );
	}
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	y += 10;
	g2d.drawString( "Message:", x, y );//$NON-NLS-1$
	x += g2d.textExtent( "Message:" ).x + 5;//$NON-NLS-1$
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLUE ) );
	g2d.drawString( sMessage, x, y );
	x = 25;
	y += fm.getHeight( );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	y += 10;
	g2d.drawString( "Trace:", x, y );//$NON-NLS-1$
	x = 40;
	y += fm.getHeight( );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_DARK_GREEN ) );
	for ( int i = 0; i < stea.length; i++ )
	{
		g2d.drawString( stea[i].getClassName( ) + ":"//$NON-NLS-1$
				+ stea[i].getMethodName( )
				+ "(...):"//$NON-NLS-1$
				+ stea[i].getLineNumber( ), x, y );
		x = 40;
		y += fm.getHeight( );
	}
	fo.dispose( );
}
 

/**
 * Create an awt font by converting as much information 
 * as possible from the provided swt <code>FontData</code>.
 * <p>Generally speaking, given a font size, an swt font will 
 * display differently on the screen than the corresponding awt 
 * one. Because the SWT toolkit use native graphical ressources whenever 
 * it is possible, this fact is platform dependent. To address 
 * this issue, it is possible to enforce the method to return 
 * an awt font with the same height as the swt one.
 * 
 * @param device The swt device being drawn on (display or gc device).
 * @param fontData The swt font to convert.
 * @param ensureSameSize A boolean used to enforce the same size 
 * (in pixels) between the swt font and the newly created awt font.
 * @return An awt font converted from the provided swt font.
 */
public static java.awt.Font toAwtFont(Device device, FontData fontData, 
        boolean ensureSameSize) {
    int style;
    switch (fontData.getStyle()) {
        case SWT.NORMAL:
            style = java.awt.Font.PLAIN;
            break;
        case SWT.ITALIC:
            style = java.awt.Font.ITALIC;
            break;
        case SWT.BOLD:
            style = java.awt.Font.BOLD;
            break;
        default:
            style = java.awt.Font.PLAIN;
            break;
    }
    int height = (int) Math.round(fontData.getHeight() * device.getDPI().y 
            / 72.0);
    // hack to ensure the newly created awt fonts will be rendered with the
    // same height as the swt one
    if (ensureSameSize) {
        GC tmpGC = new GC(device);
        Font tmpFont = new Font(device, fontData);
        tmpGC.setFont(tmpFont);
        JPanel DUMMY_PANEL = new JPanel();
        java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(), 
                style, height);
        if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) 
                > tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) 
                    > tmpGC.textExtent(Az).x) {
                height--;                
                tmpAwtFont = new java.awt.Font(fontData.getName(), style, 
                        height);
            }
        }
        else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) 
                < tmpGC.textExtent(Az).x) {
            while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) 
                    < tmpGC.textExtent(Az).x) {
                height++;
                tmpAwtFont = new java.awt.Font(fontData.getName(), style, 
                        height);
            }
        }
        tmpFont.dispose();
        tmpGC.dispose();
    }
    return new java.awt.Font(fontData.getName(), style, height);
}
 

/**
 * Create a default image. It is a port of the image used by the Login Box
 * in the project SwingX
 *
 * @param w width
 * @param h height
 * @return a default image (blue wave)
 */
private Image createDefaultImage(final int w, final int h) {
	final Display display = Display.getCurrent();
	final Color backgroundColor = new Color(display, 49, 121, 242);
	final Color gradientColor1 = new Color(display, 155, 185, 245);
	final Color gradientColor2 = new Color(display, 53, 123, 242);

	final Image img = new Image(display, w, h);
	final GC gc = new GC(img);
	gc.setAdvanced(true);
	gc.setAntialias(SWT.ON);
	gc.setBackground(backgroundColor);
	gc.fillRectangle(0, 0, w, h);

	final Path curveShape = new Path(display);
	curveShape.moveTo(0, h * .6f);
	curveShape.cubicTo(w * .167f, h * 1.2f, w * .667f, h * -.5f, w, h * .75f);
	curveShape.lineTo(w, h);
	curveShape.lineTo(0, h);
	curveShape.lineTo(0, h * .8f);
	curveShape.close();

	final Pattern pattern = new Pattern(display, 0, 0, 1, h * 1.2f, gradientColor1, gradientColor2);
	gc.setBackgroundPattern(pattern);
	gc.fillPath(curveShape);

	final Font font = new Font(display, "Arial Bold", 30, SWT.NONE);
	gc.setFont(font);
	gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
	final Point textSize = gc.stringExtent(ResourceManager.getLabel(ResourceManager.LOGIN));
	gc.drawString(ResourceManager.getLabel(ResourceManager.LOGIN), (int) (w * .05f), (h - textSize.y) / 2, true);

	font.dispose();
	curveShape.dispose();
	pattern.dispose();
	backgroundColor.dispose();
	gradientColor1.dispose();
	gradientColor2.dispose();
	gc.dispose();
	return img;
}
 

public void paintText(GC gc, IColorManager colorManager, ISettings settings, Rectangle bounds, Rectangle imageBounds, boolean hover, boolean selected, String text) {
		if (text == null || text.length() == 0)
			return;
		
		int imgWidth = 0;
		if (imageBounds != null)
			imgWidth = imageBounds.width;		

		Point se = gc.stringExtent(text);
		int textTop = (CustomButton.BUTTON_HEIGHT - se.y) / 2;
		//int textWidth = se.x;
		
		Font oldFont = gc.getFont();
		Font newFont = settings.getButtonTextFont(oldFont);
		gc.setFont(newFont);
		
		// skip image if image is null (TODO: feature to let users align imageless button text with image button text?
		//int spaceNeeded = (imgWidth > 0 ? mLeftSpacer + imgWidth : 0) + mRightSpacer + textWidth;
		
		String textToUse = text;
		
		// out of bounds?
/*		if (spaceNeeded > bounds.width) {
			//TODO: truncate text
			char[] total = mText.toCharArray();
			StringBuffer fin = new StringBuffer();
			int loop = 0;
			while (gc.stringExtent(fin.toString()).x < (bounds.width - gc.stringExtent("...").x)) {
				fin.append(total[loop]);
				loop++;
			}
			fin.append("...");
			textToUse = fin.toString();
		}
*/				
		gc.setForeground(settings.getButtonTextColor());
		gc.drawString(textToUse, (imgWidth > 0 ? settings.getLeftButtonTextSpacing() + imgWidth : 0) + settings.getButtonTextImageSpacing(), textTop-1, true);
		
		// reset fonts
		newFont.dispose();
		gc.setFont(oldFont);
	}
 

/**
 * Create an awt font by converting as much information as possible from the provided swt <code>FontData</code>.
 * <p>
 * Generally speaking, given a font size, an swt font will display differently on the screen than the corresponding
 * awt one. Because the SWT toolkit use native graphical ressources whenever it is possible, this fact is platform
 * dependent. To address this issue, it is possible to enforce the method to return an awt font with the same height
 * as the swt one.
 *
 * @param device
 *            The swt device being drawn on (display or gc device).
 * @param fontData
 *            The swt font to convert.
 * @param ensureSameSize
 *            A boolean used to enforce the same size (in pixels) between the swt font and the newly created awt
 *            font.
 * @return An awt font converted from the provided swt font.
 */
public static java.awt.Font toAwtFont(final Device device, final FontData fontData, final boolean ensureSameSize) {
	int style;
	switch (fontData.getStyle()) {
		case SWT.NORMAL:
			style = java.awt.Font.PLAIN;
			break;
		case SWT.ITALIC:
			style = java.awt.Font.ITALIC;
			break;
		case SWT.BOLD:
			style = java.awt.Font.BOLD;
			break;
		default:
			style = java.awt.Font.PLAIN;
			break;
	}
	int height = (int) Math.round(fontData.getHeight() * device.getDPI().y / 72.0);
	// hack to ensure the newly created awt fonts will be rendered with the
	// same height as the swt one
	if (ensureSameSize) {
		final GC tmpGC = new GC(device);
		final Font tmpFont = new Font(device, fontData);
		tmpGC.setFont(tmpFont);
		final JPanel DUMMY_PANEL = new JPanel();
		java.awt.Font tmpAwtFont = new java.awt.Font(fontData.getName(), style, height);
		if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) > tmpGC.textExtent(Az).x) {
			while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) > tmpGC.textExtent(Az).x) {
				height--;
				tmpAwtFont = new java.awt.Font(fontData.getName(), style, height);
			}
		} else if (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) < tmpGC.textExtent(Az).x) {
			while (DUMMY_PANEL.getFontMetrics(tmpAwtFont).stringWidth(Az) < tmpGC.textExtent(Az).x) {
				height++;
				tmpAwtFont = new java.awt.Font(fontData.getName(), style, height);
			}
		}
		tmpFont.dispose();
		tmpGC.dispose();
	}
	return new java.awt.Font(fontData.getName(), style, height);
}
 

private final void showException( GC g2d, Exception ex )
{
	String sWrappedException = ex.getClass( ).getName( );
	Throwable th = ex;
	while ( ex.getCause( ) != null )
	{
		ex = (Exception) ex.getCause( );
	}
	String sException = ex.getClass( ).getName( );
	if ( sWrappedException.equals( sException ) )
	{
		sWrappedException = null;
	}

	String sMessage = null;
	if ( th instanceof BirtException )
	{
		sMessage = ( (BirtException) th ).getLocalizedMessage( );
	}
	else
	{
		sMessage = ex.getMessage( );
	}

	if ( sMessage == null )
	{
		sMessage = "<null>";//$NON-NLS-1$
	}
	StackTraceElement[] stea = ex.getStackTrace( );
	Point d = this.getSize( );

	Device dv = Display.getCurrent( );
	Font fo = new Font( dv, "Courier", SWT.BOLD, 16 );//$NON-NLS-1$
	g2d.setFont( fo );
	FontMetrics fm = g2d.getFontMetrics( );
	g2d.setBackground( dv.getSystemColor( SWT.COLOR_WHITE ) );
	g2d.fillRectangle( 20, 20, d.x - 40, d.y - 40 );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	g2d.drawRectangle( 20, 20, d.x - 40, d.y - 40 );
	g2d.setClipping( 20, 20, d.x - 40, d.y - 40 );
	int x = 25, y = 20 + fm.getHeight( );
	g2d.drawString( "Exception:", x, y );//$NON-NLS-1$
	x += g2d.textExtent( "Exception:" ).x + 5;//$NON-NLS-1$
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
	g2d.drawString( sException, x, y );
	x = 25;
	y += fm.getHeight( );
	if ( sWrappedException != null )
	{
		g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
		g2d.drawString( "Wrapped In:", x, y );//$NON-NLS-1$
		x += g2d.textExtent( "Wrapped In:" ).x + 5;//$NON-NLS-1$
		g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
		g2d.drawString( sWrappedException, x, y );
		x = 25;
		y += fm.getHeight( );
	}
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	y += 10;
	g2d.drawString( "Message:", x, y );//$NON-NLS-1$
	x += g2d.textExtent( "Message:" ).x + 5;//$NON-NLS-1$
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLUE ) );
	g2d.drawString( sMessage, x, y );
	x = 25;
	y += fm.getHeight( );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
	y += 10;
	g2d.drawString( "Trace:", x, y );//$NON-NLS-1$
	x = 40;
	y += fm.getHeight( );
	g2d.setForeground( dv.getSystemColor( SWT.COLOR_DARK_GREEN ) );
	for ( int i = 0; i < stea.length; i++ )
	{
		g2d.drawString( stea[i].getClassName( ) + ":"//$NON-NLS-1$
				+ stea[i].getMethodName( ) + "(...):"//$NON-NLS-1$
				+ stea[i].getLineNumber( ), x, y );
		x = 40;
		y += fm.getHeight( );
	}
	fo.dispose( );
}